T.I Building is a trusted extension builder serving customers in Maghaberry and the surrounding area. Contact us to today to get a competitive quot...
From £16,836
Trusted and professional extension builder in Maghaberry. Experienced in all extension buildering work and keeping within budget and on quote. Belf...
From £16,884
Relax... you have found a reliable extension builder in Maghaberry. Finch Construction NI is a friendly and reliable company based in Maghaberry wh...
From £16,948
Trusted and professional extension builder in Maghaberry. Experienced in all extension buildering work and keeping within budget and on quote. The ...

Underpinning ranges from £16,836 (Belfast Loft Company based in BT17) to £18,060 (Build a Boiler based in BT67), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in Maghaberry by posting a job with HaMuch and we will send it to extension builders in Maghaberry.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Maghaberry | £31 | £205 |
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Waringstown | £23 | £167 |
| Underpin A Building near Crumlin | £26 | £194 |
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Banbridge | £29 | £205 |
| Underpin A Building near Belfast | £23 | £161 |
| Underpin A Building near Craigavon | £23 | £181 |
| Underpin A Building near Ballynahinch | £19 | £189 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,126

Two storey extension - £87,438

Build a timber frame extension - £25,626

Build a swimming pool - £80,626

Single storey extension - £47,512

Side return extension - £37,288

Install an RSJ - £1,826

Outbuilding - £9,626

Build a Mansard loft conversion - £51,626

Loft conversion - £30,240

Build a kitchen extension - £41,626

Hip to gable loft conversion - £41,626

Granny annexe - £86,626

Garden office - £9,626

Convert a Garage - £15,626

Garage - £18,126

Build a flat roof extension - £21,626

Build a dormer loft conversion - £41,626

Concrete foundations - £5,876

Convert a bungalow loft - £28,626

Convert a basement - £33,288